Java

Welcome back to Papers We Love, Zurich! In this session, Daniel Galán Pascual, a PhD student in the Information Security group at ETH Zürich, will present "**A Gentle Introduction to Ownership Types in Rust**". Ownership types are what give Rust its memory safety guarantees: the compiler statically rules out entire classes of bugs (use-after-free, data races, dangling pointers) with no garbage collector and no runtime cost. Through worked examples, the talk builds a working understanding of ownership in practice, drawing on the conceptual model of "[A Grounded Conceptual Model for Ownership Types in Rust](https://arxiv.org/abs/2309.04134)" and its accompanying Aquascope tool. **Why care?** * ***For systems programmers***: ownership types are a general approach to resource management that shows up across many languages, with Rust being the most prominent industrial example. The intuition you build means finally making sense of borrow checker errors when they matter most, both in Rust and beyond it. * ***For PL and type-theory enthusiasts***: ownership types have deep connections to linear and affine type theory. Seeing them in an industrial language reveals how theory meets real-world complexity. The talk will be 45-60 minutes, followed by discussion, Q&A and snacks. No prior background in type systems or Rust is required. However, basic systems programming background will be beneficial.

Lerne wie ein 3D-Scanner funktioniert und kreiere und optimiere deinen eigenen Avatar

Angular Zürich is back this April with two exciting talks exploring the future of Angular and modern application architecture. In the first talk, **Tomas Trajan** presents *“Embracing agentic future with Angular Skills & MCP”* He will explore how Angular is evolving in the age of intelligent, agent-driven systems, and what skills developers need to stay ahead. Expect insights into modern Angular capabilities, emerging patterns, and how MCP and agent-based approaches are shaping the future of frontend development. The second talk by **Mateusz Halada**, *“Gone without a Zone - Understanding Zoneless Angular”* dives into one of the most important shifts in Angular’s evolution. You’ll learn what it means to go zoneless, why it matters for performance and developer experience, and how to approach building applications without Zone.js. Join us for an evening of forward-looking Angular topics, practical insights, and great discussions with the community. **Agenda** * 18:00 – **Doors open** * 18:15 - 18:30 – **Intro** * 18:30 - 19:00 – **Tomas Trajan** \- Embracing agentic future with Angular Skills & MCP * 19:05 - 19:45 – **Mateusz Halada** \- Gone without a Zone \- Understanding Zoneless Angular * 19:50 - 21:00 – **Networking**

Hallo zusammen, Wir freuen uns auf einen Vortrag, der tief in TypeScript eintaucht. Christian Wörz nimmt uns auf eine spannende Reise in das Typescript Universum. **TypeScript Deep Dive: Selten genutzte, fortgeschrittene Features verständlich erklärt** TypeScript ist längst Standard in modernen JavaScript-Projekten. Doch ein Großteil seiner wirklichen Power bleibt im Alltag oft ungenutzt. In diesem Talk werfen wir einen Blick auf die weniger bekannten Features des TypeScript-Type-Systems: von Conditional Types und präziser Typinferenz über Utility-Patterns bis hin zu Typ-Tricks, die sich wie „Magie“ anfühlen, aber Code robuster, wartbarer und sicherer machen. Und das Ganze nicht nur auf Folien, sondern live im Editor. Wenn du TypeScript bereits nutzt und das Gefühl hast: “Da muss doch noch mehr gehen…”, dann ist dieser Talk für dich. **Christian Wörz** Christian ist ein Fullstack Entwickler mit über 15 Jahren Erfahrung in der Software-Entwicklung. Er ist Oracle ACE in Java und Microsoft MVP für Web Development und Web Tools. Nebst seiner Arbeit als externer Mitarbeiter bei unterschiedlichen Firmen ist er in seiner Freizeit gerne auf Konferenzen unterwegs und gibt sein Wissen weiter. Ebenfalls betreibt er einen YouTube Kanal auf dem er komplexe TypeScript-Themen einfach erklärt.

⬇️⬇️⬇️ **EN/DE/PR** ⬇️⬇️⬇️ **🎶 Samba Drumming,** **Open Bateria** **🎶** Beginners and experienced drummers... all are welcome! This session is about discovering samba, or discovering a different samba instrument if you are already playing. ***Note:*** if you are experienced with samba enredo drumming and would like to dive straight into an ensaio please reach out to us. We are always looking to grow our core team! **💥 What to Expect:** \- All Skill Levels: From newbies to seasoned drummers\. \- No Instruments Needed: We provide everything\, but you can bring your own\. 💰 **Cost** 💰 First-timers try-out for free! 15 CHF per session thereafter (open bateria is included in full association membership). **🥁 Ready to Drum?** 🥁 Don't miss this fun, energizing session! Connect with the samba community and drum your heart out. **📌 What to Bring:** **\- Ear Plugs:** Recommended "Alpine Music Pros." **\- Water Bottle:** Stay hydrated. **\- Spare T\-Shirt:** It gets warm! \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **"🎶 Samba Trommeln, Offene Bateria 🎶** Anfänger und erfahrene Trommler... alle sind willkommen! In dieser Session geht's darum, Samba zu entdecken oder, wenn du schon spielst, ein anderes Samba-Instrument auszuprobieren. ***Hinweis:*** Wenn du bereits Erfahrung mit Samba-Enredo-Trommeln hast und direkt in eine Probe einsteigen möchtest, melde dich bei uns. Wir sind immer auf der Suche, unser Kernteam zu erweitern! **💥 Was dich erwartet:** * Alle Erfahrungsstufen: Von Neulingen bis zu erfahrenen Trommlern. * Keine Instrumente nötig: Wir stellen alles zur Verfügung, aber du kannst gerne dein eigenes mitbringen. **💰 Kosten 💰** Erste Session kostenlos! Danach 15 CHF pro Session (offene Bateria ist in der vollständigen Mitgliedschaft enthalten). 🥁 Bereit zum Trommeln? 🥁 Verpass diese spaßige und energiegeladene Session nicht! Verbinde dich mit der Samba-Community und trommle aus vollem Herzen. 📌 Was du mitbringen solltest: * Ohrstöpsel: Empfohlene "Alpine Music Pros." * Wasserflasche: Hydriert bleiben. * Ersatz-T-Shirt: Es wird warm!" \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **🎶 Samba de Bateria, Bateria Aberta 🎶** Iniciantes e bateristas experientes... todos são bem-vindos! Essa atividade é pra você conhecer o samba ou, se você já toca, descobrir um instrumento diferente de samba. ***Nota:*** se você já tem experiência com samba enredo e quer ir direto para um ensaio, entre em contato com a gente. Estamos sempre buscando crescer nosso time principal! **💥 O que Esperar:** * Todos os Níveis: De novatos a bateristas experientes. * Sem Necessidade de Instrumentos: Nós fornecemos tudo, mas você pode trazer o seu se quiser. **💰 Custo 💰** A primeira sessão é grátis! 15 CHF por sessão depois (bateria aberta está incluída na associação completa). **🥁 Pronto para Tocar? 🥁** Não perca essa sessão divertida e energizante! Conecte-se com a comunidade do samba e toque com o coração. **📌 O que Levar:** * Protetores de Ouvido: Recomendamos "Alpine Music Pros." * Garrafa de Água: Fique hidratado. * Camiseta Extra: Vai esquentar!" \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-

**Most products are designed to move people in a certain direction.** But when it comes to behaviour change, pressure and punishment **often** **backfire.** They may create short-term compliance, but they can also leave users feeling guilty, frustrated, or simply ready to give up. **In this talk, Mi Xue Tan explores how UX can support lasting behaviour change through positive reinforcement.** Instead of designing systems that fight human psychology, she looks at how we can build experiences that work with it — reducing resistance, creating motivation, and supporting small steps that add up over time. This matters for the UX community because every product shapes behaviour. When we design with human needs and motivation in mind, retention does not have to be forced. It can emerge more naturally through experiences that feel supportive, effective, and genuinely human. **[Mi Xue Tan](https://www.linkedin.com/in/mi-xue-tan-3030b5120/)** works at the intersection of data, user research, and human behavior. With a background in data science and UX research, her work xplores how thoughtful design and positive reinforcement can support meaningful behavior change. Her focus: using data, psychology, and good communication to **create experiences that people don’t just use — but stick with.** \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 💬 The Talk is in **English** 📍 The event will be held at ETH Zürich Maschinenbau ML, **Room F36** We kindly ask you to arrive *10 minutes* early of the event start, so everyone can find a seat due to high attendance. *Thank you!*

⬇️⬇️⬇️ **EN/DE/PR** ⬇️⬇️⬇️ Our 'Ensaio de Bateria' is for regular members of the association and exceptionally for those who have previous experience playing in a samba bateria (please get in touch if you're interested, we'd love to hear from you). In this session, we will dive into fresh material and technique, while also taking the time to perfect individual parts of our existing repertoire if needed. Whether you're looking to improve your groove or refine specific techniques, this is the perfect opportunity to elevate your skills! **What to bring:** * Ear Plugs (we recommend "Alpine Music Pros" from a music shop) * Water Bottle for staying hydrated * Spare T-shirt for afterwards (it gets pretty warm) \-\-\-\-\-\-\- Unsere 'Ensaio de Bateria' ist für regelmäßige Mitglieder des Vereins und ausnahmsweise für diejenigen, die bereits Erfahrung in einer Samba Bateria haben (bitte melde dich, wenn du Interesse hast, wir würden uns freuen, von dir zu hören). In dieser Session werden wir uns mit neuem Material und Technik beschäftigen, uns aber auch die Zeit nehmen, einzelne Teile unseres bestehenden Repertoires zu perfektionieren. Egal, ob du deinen Groove verbessern oder bestimmte Techniken verfeinern möchtest, dies ist die perfekte Gelegenheit, deine Fähigkeiten zu steigern! **Was du mitbringen solltest:** · Ohrstöpsel (wir empfehlen "Alpine Music Pros" aus dem Musikfachhandel) · Eine Wasserflasche, damit du genug Flüssigkeit zu dir nehmen kannst · Ersatz-T-Shirt für danach (es wird ziemlich warm) \-\-\-\-\-\-\- Nosso "Ensaio de Bateria" é para os membros regulares da associação e, excepcionalmente, para aqueles que têm experiência anterior de tocar numa bateria de samba (entre em contato se você estiver interessado, gostaríamos muito de ouvir você!). Nesta sessão, vamos nos aprofundar em novos materiais e na técnica, além de dedicar tempo para aperfeiçoar partes individuais de nosso repertório existente, se necessário. Se estiver procurando melhorar seu groove ou refinar técnicas específicas, esta é a oportunidade perfeita para elevar suas habilidades! **O que trazer:** * Protetores de ouvido (recomendamos "Alpine Music Pros”). * Garrafa d’água para se manter hidratado * Uma troca de roupa para depois do ensaio (fica bem quente)

Be open for change and come into your full potential! Get unstuck with Kundalini Yoga, Pranayam and Meditation and learn the tools to explore your inner riches. Let go of mental trash, find courage and lightness, and bring a sparkling joyfulness into your everyday-life as you gradually connect with your innermost sensitive being. You will leave this class energetically re-charged, with a calm mind, your spirits lifted and a soothed heart. Looking forward to see you! Sat Nam and blessings of grace, Nava No previous knowledge required. This class is for anyone interested in kundalini yoga and meditation, newcomers and seasoned practitioners alike. Regular class: 35.- / 10-class multiple: 320.- (valid 4 months) Students / Unemployed / Kulturlegi: 25.- / 10-class multiple: 225.- (valid 4 months) Visit also: www.yoga2be.ch // Meetup: Yoga2Be - Movement, Energy, Nutrition for Body & Mind http://meetu.ps/c/3DljJ/8Hl5s/a

Welcome to the Open Level Play Session. This session takes place every Saturday from 12:15 to 13:45 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

Welcome to the Open Level Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Open to players of all skill levels. This session is for doubles with a relaxed and social focus. Ideal for casual play, improvement and meeting new players. Payment can be made via TWINT after the session.

**🌷IMAGINE painting surrounded by flowers all around the place.** **WHAT DO WE DO?** ► **Demo**: I show you how I paint flowers or what is around using watercolors. ► **Motivation**: Together we are creative outdoors. ► **Guidance**: You choose and I explain you the steps. **WHERE?** We go to the peaceful Belvoir Park, one of the oldest landscape gardens in Zurich. Irises, peonies, magnolias, tulips... enchant with their colors. **WHAT IS INCLUDED?** ► **Tutoring:** 3 hours with my guidance and solving your doubts. ► **Material**: Watercolors, watercolor paper, pencil and eraser. **ALL LEVELS** 😓 **Beginner:** "But I have no clue!" **Me:** No worries. I always show the art medium basics and personalized support if you need it. 🤓 **Advance**: "But I don't want to listen the boring explanations!" **Me:** No worries. Start to paint in your rhythm and skip the introduction. **I SPEAK** English, Spanish and German (intermediate level). **WHAT TO BRING?** A small chair or towel and a hat to sit where you want. 😊**Hi! I am Marga and I am here to help you to improve your life.** Let me take care of everything. Good material, relaxing atmosphere, clear organization and kind support. **FOLLOW ME TO LEARN FOR FREE: [Marga Crea Arte](https://www.instagram.com/margacrea_art)** (Youtube/Instagram/Facebook/TikTok).

Welcome to the Competitive Play Session. This session takes place every Saturday from 10:45 to 12:15 at the Yonex Badminton Hall Hardbrücke. The number of players on the waitlist one week in advance determines the number of courts booked. If you are on the waitlist but can no longer attend, please remove yourself as early as possible. Players are accepted into the session based on skill suitability. This session is for experienced players looking for quality games. Play is focused on doubles with a competitive mindset and consistent rallies. You should be comfortable smashing, return smashes and keeping up a moderate tempo throughout the session. New players and those who are new to badminton are welcome to join the PM Session (Open Level Play). Payment can be made via TWINT after the session.

Welcome to the **Task-Buddies** event of the **Zürich Productivity Circle**, where we bring together like-minded individuals to work on personal goals and share the experience of growth in a supportive community. Maybe you are building a business or side hustle, studying for a course, learning a new (programming) language, figuring the tax system out, writing code, prose, or poetry, researching new stocks for your portfolio, tackling your German homework, or upskilling for your job. In all of these cases and more, this is the perfect space for you. In fact, productivity does not end there. Even if you just want to read a psychology book to resolve a personal struggle, sketch a mountain, listen to podcasts, organize your week, respond to unanswered emails and messages, enjoy a novel, or just reflect and meditate, you are very welcome here. For any task that adds positively to your life and can be done sitting down with others (exception: anything noisy/disruptive/disrespectful), you will fit into the events. We will meet at a work-friendly café in Zürich and follow the agenda below. **Agenda:** * **Introductions and food (20-30 mins):** Start with a round of introductions to get to know each other and share what we'll be working on, buy our food and drinks. * **Productive Work Session (1-2 hours)** Dive into your individual tasks in a focussed, distraction-free environment. * **Collective Break and Socializing (\~15 mins):** Take a planned break to stretch, chat, get more coffee, and share insights about your projects. * **Continued Work Session (1-2 hours):** Get back to your tasks with renewed focus and motivation. * **Wrap-Up and Reflections (15+ mins):** Conclude with a reflection on what we accomplished, share productivity tips or questions, discuss plans for future meetups, stay back for more chit chat if you like. **What to Bring:** * Your project or task materials (laptop, charger, books, sketchpad, pen, etc.) * Respectful and kind demeanour * A positive attitude and a willingness to share and learn **Note:** Please ensure that your tasks are suitable for a quiet, communal setting. We aim to maintain a respectful and conducive environment for everyone. **Venue Courtesy:** Out of courtesy for the venue, please order something drinks for yourself. This helps support the café and ensures we can continue to use their space for our meetups.

**Charcoal is messy but fun!!** **WHAT DO WE DO?** Draw with your fingers in this workshop! Demo and practice. **WHAT IS INCLUDED?** ► **Tutoring:** 3 hours with my guidance and solving your doubts. ► **All the** **Material**: Charcoal (different kinds), soft and hard pencils, paper (different kinds), paper wipes, brushes, support board and kneadable art eraser. ► **Art experience**: I create this moment for you. When you paint it, the moment will be unforgettable. Did I mention that painting live is what I love the most? **ALL LEVELS** 😓 **Beginner:** "But I have no clue!" **Me:** No worries. I always show the art medium basics and personalized support if you need it. 🤓 **Advance**: "But I don't want to listen the boring explanations!" **Me:** No worries. Start to paint in your rhythm and skip the introduction. **WHERE?** The Archeological Museum of Zurich University is an inspiring place with handmade objects such as vases, plates and figures from Egypt, Greek and Roman times which are up to 5000 years old. Free entrance to the Museum. **FORMER STUDENT?** Write me before the payment to get your private discount code. **I SPEAK** English, Spanish and German (level B). **Hi! I am Marga and I am here to help you to improve your life.** Let me take care of everything. Good material, relaxing atmosphere, clear organization and kind support. **FOLLOW ME TO LEARN MORE: [Marga Crea Arte](https://www.instagram.com/margacrea_art)** (Youtube/Instagram/Facebook/TikTok).

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9

WQC has weekly Thursday night social nights at the Westerville Java Central. Come and grab a coffee and connect with the community: low stakes, chill environment, and tasty drinks. No registration is required; come as you are.

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

FREE event [https://www.ccad.edu/chroma](https://www.ccad.edu/chroma) Friday, May 15, 3–7 p.m. CCAD campus, 60 Cleveland Ave, Columbus, OH Join Columbus College of Art & Design for *2025* *Chroma: Best of CCAD*, our annual campuswide exhibition showcasing outstanding student work from across the college’s academic programs. This faculty-juried show features select work from CCAD students of all class years, and is a can’t-miss end-of-year campus celebration recognizing their tremendous achievements. It’ll be a night of fun and entertainment, with interactive games, animation and film screenings, art symposiums, poetry and prose readings, and more (along with some of the best local food trucks). *Chroma* is free and open to all. Many exhibitions including... **Game Art & Design:** **DSB, first floor, Welcome Center lobby and Room 115**

When judging morality, should we prioritize **intentions/duty** or **outcomes/results**? It introduces two influential philosophers as representatives of these approaches. * **Immanuel Kant (deontology):** An action is moral when it is done from **duty** and follows rational, universal principles (the **categorical imperative**). Certain acts—like lying—are wrong regardless of the consequences; you can’t do a wrong thing for a right reason. * **John Stuart Mill (utilitarian consequentialism):** The morality of an action is determined by its **effects**, specifically how much **happiness/well-being** it produces. Mill argues that some pleasures are “higher” than others, and that good intentions don’t redeem harmful outcomes. ## Discussion Questions 1. **The lying dilemma:** A murderer comes to your door and asks if your friend is hiding inside. Kant would say you must not lie. 2. **Can good intentions rescue a bad outcome?** 3. **The organ harvest problem:** A surgeon has five patients dying of organ failure and one healthy patient in for a checkup. Killing the one to harvest organs would save five lives, and the math works out for the utilitarian. Why does this feel so deeply wrong? Is that feeling a point in Kant's favor, or just a bias we should overcome? 4. **Do rules need exceptions?** Kant insists moral rules must be universal, with no exceptions. But most of us can imagine extreme scenarios where any rule seems like it should bend. Does the need for exceptions fatally undermine deontology, or is the strength of the system precisely that it refuses to bend? 5. **Who gets to calculate the consequences?** Utilitarianism asks us to maximize good outcomes, but we're notoriously bad at predicting consequences. If we can't reliably know the results of our actions, is it practical to base our entire moral system on outcomes? Does this uncertainty push us back toward rules and principles? 6. **Everyday morality:** Think about a real moral decision you've made recently, even a small one. Did you reason more like a Kantian (what's the right thing to do in principle?) or more like a utilitarian (what will produce the best result?)? Do most people naturally lean one way? 7. **Justice vs. the greater good:** A town can prevent a deadly plague by sacrificing one innocent person. The greater good is clearly served. But is it just? Can an action be morally right and deeply unjust at the same time? 8. **The big synthesis question:** Are these two systems actually opposed, or do they often arrive at the same answers by different paths? Is it possible that we need both: rules to guide us in the moment and consequences to evaluate systems and policies over time?